Do mews count? These are generally former stables in alleys behind much larger and more spacious terraced housing, which have been turned into small cottages.
In central London there are some that are more commercial:
__________________ There is a cult of ignorance in the United States, and there always has been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge." - Isaac Asimov